Concrete building construction



April 28, 1925.

F. MGM. SAWYER' CONCRETE BUILDING CONSTRUCTION Filed Aug. 21, 1922 Patented Apr. 28, 1925.

McMURR-AY SAWYER, LBS ANGELES, CALIFORNIA.

CONGEETE BUILDING CONSTRUCTION.

Application filed August 21, 1922. Serial No. 588,111.

To all-whom it may concern. A

Be it known that I, FRANK MGMURRAY SAWYER, a citizen of the United States, re-

siding at Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improve ments in Concrete Building Constructions,

of which the following, is a specification.

This invention relates to concrete building constructions, and has for its objects to provide an improved means whereby the walls,

floors and roof of the building can be constructed of standardized units in the shape of light-weight slabs, which can be precast l in the type'of molds known as plural molds. The advantages derived from this improve ment consist in the use of a minimum amount of material and labor and at the same time securing a construction of maximum strength and wearing qualities, which can be produced at a minimum cost. v

These and other objects hereinafter set forth are attained by the means illustrated in the accompanying drawings, in whicl Figure 1 is a perspective view of a form of wall construction. I

Figure 2 is a similar View of another form of wall construction.

Figure 3 is a cross-sectional view through one of 'thewindow frames, and.

Figure 4- is a. vertical sectional view through one of the window frames.

Fig. 5 is a detail perspective view of one of the wall slabs.

Similar reference numerals in all of the figures of the drawings designate like parts.

The most important units of this construction are the slabs 10, each of which is formed with a relatively thin slab-like body portion 11 that forms the front and rear faces of the slab, two narrow flanges 12 projecting in the same direction at right angles to thebody portion 11 andat opposite sides thereof, and two relatively wide flanges 13 projecting also in the same direction from the bodyportion and at right angles thereto and at the remaining opposite sides of the slab, said flanges preferably extending entirely around the edges of the body portion and forming a recessed or hollowed side on one side of the slab. The outer faces of said wide flanges 13 are concaved at 14 for a: portion of their width, preferably leaving the abutting edges 15 at the front side of the slab, and both the narrow and wide flanges have inner inclined sides to permit them to be withdrawn from the molds.

These slabs are susceptible of use both in a vertical or horizontal position. They are set in a vertical position in the walls, and their outer flat faces 12' of thenarrow flanges 12 form substantial supports for the slabs, and when used in a' horizontal position in the floors, they are supported on the flat edges 13" of the wide flanges 13, as shown clearly in the drawings. In both the wall and floor construction, the concaved sides of the wide flanges 13 of adjacent slabs form a trough-like recess, which, when filled with concrete or grout forms columns or beams for tying the slabs thereto.

A wall, (as shown in Figure 1) is formed by erecting the slabs 011 opposite sides of the wall directly opposite each other, so that the meeting-joints at both sides of the wall are in alinement, and the fiat faces 13 of the wide flanges on opposite sets of the slabs are placed in close relation to form practically, at eachjoint, two vertical con crete columns when the pockets formed by the concaved edges of adjacent slabs are filled with the binding material.

To form a very thick wall, (as shown in Figure 2 of the drawing), the slabs on opposite sides of the walls are arranged in the Figure 1 construction, excepting that the slabs of the inner and outer faces of the wall are separated a considerable distance, de-

termined upon the width of the wall desired, a and slab-keys 16 are placed transversely across the wall with their vertical edges projccting; slightly into the pockets formed by the adjacent slabs. These slab-keys 16 are formed with vertical grooves 17 on both sides of each slab and adjacent the vertical edges thereof and which forms'a head 18 at each vertical edge of the slab. The inner edges of the wide flanges 13 of' the main slabs are spaced apart a greater distance than are the abutting edges 15 when the slabs are placed in position, so when the key-slabs are placed in position, their grooves 17 will extend slightly around the outer edges of the wide flanges 13. In this position, the concrete filling the pockets between the main slabs will also surround the heads 18 of the slab-keys and thereby tie the inner and outer sections of the wall together. The slab-keys may have reenforcing Wires or rods 19 cast therein, and with their ends projecting at the sides of the keys, so that they can be secured to vertical reenforcing rods extending through the pockets.

T he slab-keys 16 form a compression bond between the inner and outer sections of the wall, and the metal ties secured to the opposite reenforcing rods 19 form the tie bond.

The concaved edges of the main slabs are molded to provide space at the rear of the pockets to permit the ends of the slab-keys to partially enter, but not of sufficient size to allow the pressure of the concrete poured in the pockets to displace the slabs outwardly.

Walls built as thus described are suitable for houses without the application of a plaster coat, as the units can be formed so true as to insure a perfectly alincd true surface.

Windows are provided for by setting a precast sill 20 and stool 21, and using precast jamh-units 22 (as shown in Figure 3), the inner sides of said jamb-units being preferably molded concave to serve the same purpose of the concave edges of the main slabs.

A wall construction as above set forth has great tensile strength and lightness, admits of great saving in labor, both in production and erection, and providing a ll'lllXlll'lillll of dead-air insulation for the wall.

\Vhat is claimed is:-

1. A concrete building construction formed in part with a. series of pro-cast concrete slabs having tile-like edge flan es on opposite sides which extend the lull width of the slabs, said edge flanges being concave on their outer sides to form continuous concrete-recciving pockets between adtill jacent slabs when they are erected edge to edge.

2. In a concrete building construction, a wall comprising a series of pre-cast concrete slabs arranged on edge in double rows to form inner and outer sections of the wall, the adjacent edges of the slabs in both of said sections being formed with flanges having concave outer faces extending the full width of the slabs to provide vertical pockets in the wall, and a concrete filling in said pockets to form vertical columns in each wall-section at the joints between both the inner and outer rows of slabs to bind the slabs together.

3. A concrete wall formed of a series of pro-cast concrete slabs arranged on edge in vertical double rows to form inner and outer wall sections, the adjacent edges of the slabs being formed with flanges having concave outer faces to provide vertical pockets in each of said sections, said concave faces being formed to a wider opening at the inner edges of the slabs than at their outer edges, relatively thin pro-cast slabkeys arranged transversely of the wall and having their vertical edges projecting into the pockets in both sections, and a concrete filling in the pockets forming vertical opposite columns in the sections and binding the parts together.

f. A concrete wall formed of a series of precast concrete slabs arranged on edge in vertical double rows to form inner and outer wall sections, the adjacent edges of the slabs being formed with flanges having concave outer faces to provide vertical pockets in each of said sections, said concave faces being formed to a wider opening at the inner edges of the slabs than at their outer edges, relatively thin pro-cast slab-keys arranged transversely of the wall and having vertical grooves on both sides adjacent their vertical edges to form heads on said vertical edges, said heads projecting into the pockets in both sections with the vertical grooves arranged opposite the inner corners of the flanges of the slabs, and a concrete filling in the pockets forming vertical oppositecolumns in the sections and binding the parts together.

5. A concrete Wall formed of a series of pre-east concrete slabs arranged on edge in vertical double rows to form inner and outer wall sections, the adjacent edges of the slabs being formed with flanges having concave outer faces to provide vertical pockets in each of said sections, said concave faces be ing formed to a wider opening at the inner edges of the slabs than at their outer edges, relatively thin pre-i-ast slab-keys arranger transwarsely of the wall and having vertical grooves on both sides adjacent their vertical edges to form heads on said vertical edges, said heads projecting into the pockets in both sections with the vertical grooves arranged opposite the inner corners of the flanges of the slabs, and a concrete filling in the pockets forming vertical opposite columns in the sections and binding the parts together, and reenforcing tie members arranged vertically in said columns and transversely of the slab-keys and united together at their unctions.

6. In a concrete construction, pre-cast concrete slabs each formed with a slab-like body portion having flanges projecting therefrom at its edges all around, two of said flanges at opposite sides of the slab being provided with concave faces extending the full Width of the slab for the purpose set forth.

7. In a concrete construction, pre-cast 5 concrete slabs each formed With a slabdike body portion having flanges projecting therefrom at its edges all around, tWo of said flanges at opposlte sldes of the slab ture.

FRANK MGMURRAY SAVVYER. 

